1 files changed, 35 insertions, 0 deletions
diff --git a/results/classifier/118/device/782 b/results/classifier/118/device/782
new file mode 100644
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--- /dev/null
+++ b/results/classifier/118/device/782
@@ -0,0 +1,35 @@
+device: 0.858
+vnc: 0.750
+network: 0.682
+graphic: 0.585
+VMM: 0.527
+i386: 0.475
+semantic: 0.454
+files: 0.398
+PID: 0.351
+register: 0.333
+socket: 0.328
+boot: 0.304
+TCG: 0.303
+ppc: 0.286
+x86: 0.263
+architecture: 0.260
+risc-v: 0.249
+virtual: 0.224
+mistranslation: 0.213
+arm: 0.211
+hypervisor: 0.204
+kernel: 0.168
+permissions: 0.144
+debug: 0.121
+performance: 0.087
+KVM: 0.076
+user-level: 0.076
+peripherals: 0.072
+assembly: 0.051
+
+nvme: DMA reentrancy issue leads to use-after-free (CVE-2021-3929)
+Description of problem:
+A DMA reentrancy issue was found in the NVM Express Controller (NVMe) emulation. Functions dma_buf_write() or dma_buf_read() in hw/nvme/ctrl.c:nvme_tx() can be called without checking if the destination region overlaps with device's MMIO. This is similar to CVE-2021-3750 (https://gitlab.com/qemu-project/qemu/-/issues/541) and, just like it, when the reentrancy write triggers the reset function nvme_ctrl_reset(), data structs will be freed leading to a use-after-free issue. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition or, potentially, executing arbitrary code within the context of the QEMU process on the host.
+
+This issue was reported by Qiuhao Li.